1、adv.（用于形容词和副词前）太，过于，过度
He's far too young to go on his own.
他年纪太小，不能独自一人去。
This is too large a helping for me/This helping is too large for me.
这一份太多，我吃不了。
2、(usually placed at the end of a clause 通常置于句末) 也；又；还
Can I come too?
我也可以来吗？
3、（评说某事物使情况更糟）而且，还
She broke her leg last week─and on her birthday too!
她上星期把腿摔断了，而且还是在她生日那一天！
4、很；非常
I'm not too sure if this is right.
这是否正确，我没有太大把握。
5、（用以强调生气、惊奇或同意等）
‘He did apologize eventually.’ ‘I should think so too!’
“他终于道歉了。”“我想他应该如此！”
扩展资料
1、We did learn to read, and quickly too
我们确实学会了阅读，而且学得很快。
2、'That money's mine.' — 'Of course it is, and quite right too.'
“那笔钱是我的。”——“当然是你的，而且也理应如此。”
3、'I'm getting a bike for my birthday.' — 'You are not.' – 'I am too.'
“我过生日想要一辆自行车。”——“不行。”——“我就要。”
4、Leather jeans that are too big will make you look larger
过于肥大的皮裤会让你看起来块头更大。
参考资料：百度百科：英语语法
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